(19)

(11)

EP 4 457 194 A1

(12)

(43) Date of publication: 06.11.2024 Bulletin 2024/45 (21) Application number: 22844566.4 (22) Date of filing: 30.12.2022

(51) International Patent Classification (IPC):  C04B 33/135(2006.01) C04B 33/34(2006.01) C04B 35/626(2006.01) (52) Cooperative Patent Classification (CPC): C04B 33/1352; C04B 33/28; C04B 33/20; C04B 33/30; C04B 33/34; C04B 35/6261; C04B 2235/6021; C04B 2235/9615; C04B 2235/77; C04B 35/6263; Y02P 40/60 (86) International application number: PCT/EP2022/088104 (87) International publication number: WO 2023/126534 (06.07.2023 Gazette 2023/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 30.12.2021 NL 2030357 (71) Applicant: Vitrifex Ceramic Glazes 3544 NX Utrecht (NL)	(72) Inventor: BAAS, Jan Berend 3544 NX Utrecht (NL) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)